Part 7 - Firing Devices and Demolition Stores; Chapter 4: Navy Demolition Stores; Primers
BRITISH EXPLOSIVE ORDNANCE
Part 7 - Chapter 4
Navy Demolition Stores

Detonators

No. 21 Mk VII

Type

Electric

Material

Copper tube

Explosive

A.S.A./C.E.

Explosive weight

33 grains

Remarks

Obsolescent; to be replaced by No. 6 Briskas
No. 25 Mk II

Type

Non-Electric

Material

Copper tube

Explosive

A.S.A./C.E.

Explosive weight

33 grains

Remarks

Obsolescent; to be replaced by No. 6 Briskas; painted red
Briska No. 6 Mk II

Type

Electric

Explosive

A.S.A./R.D.X.

Explosive weight

15 grains
Briska No. 6 Mk III

Type

Electric

Explosive

A.S.A./R.D.X.

Explosive weight

15 grains

Remarks

Same as No. 6 Mk III, but has 36-in. leads; limited use in salvage work
Briska No. 6 Mk II

Type

Non-Electric

Explosive

A.S.A./R.D.X.

Explosive weight

15 grains
I.C.I. Gasless Delay No. 1

Type

Electric

Explosive

A.S.A./C.E.

Remarks

1 sec. delay

Part 7 - Firing Devices and Demolition Stores; Chapter 4: Navy Demolition Stores; Primers